00:21:DD Northstar Systems Corp
Every MAC address from 00:21:DD:00:00:00 to 00:21:DD:FF:FF:FF belongs to a block the IEEE assigned to Northstar Systems Corp. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 00:21:DD belongs to
Written 00:21:DD, 00-21-DD or 0021DD, depending on the system. Look up a full address.
Prefix
00:21:DD
Organization
Northstar Systems Corp
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
00:21:DD:00:00:00
Last address
00:21:DD:FF:FF:FF
Address type
Globally unique, unicast
Registered address
5F, No.200 Gang Qian Rd Taipei TW 114